Wireless receiver



Feb. 25, 1930. R. K. SPENCER WIRELESS RECEIVER Filed Jan. 21, 192,4

2 Sheets-Sheet .gvwentoz RICHHRD K. SPENCER is aflim I w; M

Feb. 25, 1930.. s c 1,748,738

WIRELESS RECEIVER Filed Jan. 21, 1924 2 Sheets-Sheet 2 anoento'c RlCHfiRD K. SPENCER Patented Feb. 25, 1930 1 PATENT OFFICE.

.RroH RnKIMBERLEY SPENCER, or ,norniauax wntmiveron, ENGLAND,,ASSIG1\TOR '10 nAnioconroaa'r onor AMEEICA,;.ALCORPORATION,0F DELAWARE wInELEss RECEIVER 'Applieation filed January 21," 1924,"S eria1 N o. 687,403, and in Great Britain-January 25; 1923.

This: invention relates to; valve; receivers and its object is to provide meanswhereby a receiving set designed to Work, wlthout reaction.mayhavereaction'applied to it with- 5 block in that socket and insertthe valvein the socketinflthe blocks. j

' The invention-isillustrated by: way of ex- .outfany alteration to the permanent connecti-ons of the set Y According to :this invention I provide a blockin which-the reaction. device-is mounted and 1 which. has :onE'its; plugs, adapted to fit into the .valveksockets. of the, set. and has in it sockets; adapted. to. receive the valve "pins.

Thus, when-it isdesired to empl-oyreaction,

all that need'zbe done is-to; remove thevalve fromits socket in the-receiving set, insertthe ample in the V accompanying drawings.

: Figure? is a Figure mg Which-4's M i fthe block Figure 2 ay e tion. i Q I I. diagram f t Connections, 01 hfblock p I V: 1 Eigure 4:. is j av diagramof the circuit when the .device isiin use and arranged for produc- 7 ing regeneration...

posed of insulating material has in itplugs or pins D E F adapted to make contact withelectrical connection with the pins ofthe Valve which are connected to'the grid, one;

conductor 2to a socket A as indicated inFig.

three of the. contacts ofthe socket of a three 1 electrode valve of' the receiving set. These.

three contacts of the socket normally, that is when the block is not'in use, receive or make endofthe filament, and the anode respective ly. The pin D is permanently connected by a 3 and the pin E is permanentlyconnected' to :the valve of the receiving set with which the other filament pin of the valve contacts when a socket B by conductor? When theblock is n use, the valve fits into the socket C, one of the .fila

ment pin passes through a hole K in the block into contact with contact X of the socket of the block is not in use.

The block also has formed in it three the anode of sockets J: into which an be inserted plugs; g: h 3' represented diagrammatically in Figure. 1' andrconnected toa condenser L and an inductance M as shown diagrammatically.

=The socketJ is permanently connected to. the 5w pin F byconductort N isiacondenseryper- Which-is connected to:the socket G by 'con- :ductor 7. Socket A isrconnected :to: socket G by conductor; 8

Itwvill be understood when' itis desired to introduce reaction or f regeneration, the valve is liftedout ofthe socketsofithereceiv- 7 ing set, the block'is-placed inp'ositionawith the pins D EnandF fitting intoz'the threea said SOCk6tS..,-.2LIldfith0 valve .piinsdare .then inserted intothe sockets ALB through the 1 0 K into one ofthe-sock'ets in theivalve set,

whereupon a. reaction unit fitted- -with plugs g. h j and 'comprisinga oo-ndenserL. and inductance M'is' 'fittedo nz-topyo f the block. 1;

' For: a better understanding: jofthejinvention Ilhave shownin-Figfi are: diagranrin I V a 1 which the circuit connections-within.the dot-v Referring to the drawings a block 1 com ted rectangle corresponds. with the: circuit of .astandard:.nonrregenerativereceiver-havinga trinedantennacircuit coupledto a-tuned grid circuit and havinggtheggrid leak-connected issiromthe filament'tethe grid. and. a: grid condenserbetween the tuned input circuit and the indicator-j are; also shown in: a; conventional manner: Theconnect ons outside of thereoductance M are connectedgiirthe plate circuit grid... Aifilainenti andjaaplate batteryand an I tangle are those.suppliedyby the adapter w block when the-,threeelement valve is fitted in the block sockets. From, this diagramit would-be seenthatthecondenser.Nandin- 98 i and are .ad-aptedfto p-ermit the latter?- to be tuned whereby coupling 'is. achieved through the capacity-of the tube ini the. well-known manner- The condenser-L connected frorn v the. grid to the plate increasesthe .efl'e'ctive capacity ,ofgthe tube-andaasslsts inthe pro:

duction offeedback. orregeneration...

While-l have shown atparticularqmanner Y lei i P. y e;my inventionvbvmtilizins ape?- v,ticulan-kindpt.regenerative,circuitit be -100 v "ment including a three electrode vacuum minals of the last mentioned socket readily embodied in otherforms and I do not therefore wish to be understood as limiting the invention to the form herein shown but seek to claim my invention in any form in which it may be embodied. The scope or" my invention is to be determined by reference to the accompanying description and particularly to the claims attached thereto.

Having described my invention what I .1. An attachment for obtaining regener ation adapted tobe inserted into a socket 0rdinarily used with a three electrode vacuum tube, comprismg a block, means in said block 7 for receivingthe electrode terminals of the vacuum tube, and additional means in said block for receiving plate tuning means.

-52. An attachment for obtaining regenera- 1 tion adapted to be inserted into a socket ordinarily used with a three electrode vacuum tube, comprising a block, means in said block for receiving the electrode terminals of the vacuum tube, and a reaction device mounted within said block.

Y 3. In a non-regenerative circuit arrangevalve and associated socket, means for changing said circuit arrangement to one of regeneration, comprising a'block adapted to be inserted in said socket, terminals in said block for receiving the electrode terminals of said vacuum tube, and additional terminals for receiving plate tuning means.

4. In high frequency signallingsystems, the combination with a socket for a three electrode valve adapted to be connected to a suitable receiving circuit, of a device for changing the receiving circuit, said device having contacts adapted to cooperate with said socket and havmg a socket for receiving the terminals of the valve, connections from certain of said contacts to certain of the terand means for connecting a tuning element between another of the contacts and another of the terminals of said last mentioned socket. r

5. In high frequency signalling systems, the combination with a socket for a'three' electrode valve adapted to be connected to a suitable receiving circuit, of a device for changing the receiving circuit, said device having contacts adapted to cooperate with said socket and having a socket for receiving the terminals of the valve, connections from certain of said contacts to certain of the terminals of the last mentioned socket and a 'pair of terminals connected between another of the contacts and another of the terminals of the last mentioned socket. a

6. In a high frequency signalling system, the combination with a socket for a three electrode valve adapted to be connected to a suitable receiving circuit, said socket having contacts for the terminals adapted to cooperate with the grid plate and filament terminals of the valve, a device for chang ing the receiving circuit having contacts'cooperating with said socket to connect with the grid, plate and filament contacts of the first mentioned socket and having a socket with contacts for cooperating with the grid, plate and filament terminals of the valve, the

7 grid contacts of said device being connected together and'said filament contactsoi": said dev ce being also connected together, a pair of terminals, a connection from one of said terminals to the plate contact of the socket of the device and a connection from theother tern'iinalrto the contact which is adapted to engage this plate contact of the first mentioned socket. i

7.. A device for converting a non-regenerative circuit to a'regenerative circuit com prising a block having contacts adapted to beof the four contact members of a three electrode valve socket, means providing three orifices to receive three of the prongs of said valve, and means providing an aperture to receive the fourth prong of said valve, whereby the fourthprong is adaptedto contact the fourthcontact member of the socket.

' RICHARD KlIVlBERLEY;SPEF'XCER. 

